Bicycle.



PATBNTED APR. 16, 1907.

H. GARZL. BICYCLE.

urmou'ron- Hum 002.10, 1006, I

1 IN VE N 7'0/5 HILDEBRANDI] BAR za HILDEBRANDO GARZA, OF MONTEREY,MEXICO.

BICYCLE.

Specification of Letters Patent.

Patented April 16, 1907.

Application filed October 10, 1906. Serial No. 338,262.

To all whom it may concern.-

Be it known that I, I-IILDEBRANDO GARZA, a citizen of the Republic ofMexico, and a resident of Monterey, in the State of Nuevo Leon, Republicof Mexico, have made certain new and useful Improvements in Bicycles, ofwhich the following is a specification.

My invention is an improvement in bicycles, and consists in certainnovel constructions and combinations of parts hereafter described andclaimed.

Referring to the drawings forming a part hereof, Figure 1 is a frontview of a bicycle provided with my improvements. Fig. 2 is a side viewof Fig. 1. Fig. 3 is a top plan view of the auxiliary propellingmechanism.

In the present embodiment of my invention the bicycle, comprising theframe A, the front wheel a, and the rear wheel a, is provided with anysuitable driving mechanism, such as the sprocket a connected with therear wheel and driven by a chain a from the ordinary crank-shaft 05*.

A bevel gear-wheel B is journaled upon the front fork of the bicycle andis supported by a collar 7), secured to the front fork in any suitablemanner, the periphery of the gearwheel being provided with ratchet-teethl) for a purpose to be hereafter described.

A bracket b is secured to the front fork above the gear-wheel in anysuitable manner, and the said bracket is provided with ahorizontally-projecting arm b the said arm having a reduced end uponwhich is loosely journaled a sleeve 1), provided with a bevel-gear I),meshing with the bevel gear-wheel B and with a sprocket-wheel I),connected by a sprocket-chain b with a sprocket-wheel a secured to therear wheel. The outer end of the arm b is supported by a bracket. b thelower end of the bracket being connected to aring b encircling the frontfork at the junction of the arms with the body portion thereof.

A pawlarm C is loosely mounted on the front fork between the gear-wheelB and the collar b, and to the said pawl-arm is pivoted a pawl c,engaging the ratchet-teeth on the gear-wheel B, the pawl being retainednormally in engagement with the teeth by a spring 0 One side of thehandle-bar a is divided, as at (1 the sections of the handle-bar beinghinged together to permit the outer section to swing with respect to theinner section in a horizontal plane, and a spring a is arranged withinthe handle-bar at the junction of the sections for normally retainingthe outer section in alinement with the inner section. A link a ispivoted to the outer end of the pawl-arm by one end and has its otherend pivoted to a lug c of a bracket 0, having one of its ends providedwith a clamp 0 clamped upon the movable section of the handle-bar.

In operation my auxiliary propelling mechanism is actuated by theswinging of the outer section of the handlebar, it being evident thatwhen the section is swung for-' wardly the gear-wheel will be rotatedand when the said section is swung rearwardly the pawl will slip idlyover the ratchet-teeth. The rotation of the horizontal gear-wheel isimparted through the gear-wheel b to the sprocket-wheel b and by thechain b and sprocket-wheel a to the rear wheel a.

It will be observed that the spring a retains the sections of thehandle-bar normally in alinement with each other, a construction whichobviates the interference of the joint in steering.

I claim- A 1. The combination with the bicycle and the driving mechanismtherefor, of a handlebar comprising a plurality of sections pivotallyconnected, a bevel gear-wheel having ratchet-teeth on the peripherythereof loosely journaled on the front fork, a horizontal shaft securedto the fork above the bevel-wheel, a sleeve loosely journaled on thehorizontal shaft and provided with a sprocket-wheel and with abevel-gear meshing with the horizontal bevel-gear, a sprocket-wheel onthe rear wheel of the bicycle, a sprocket-chain connecting said sprocketwheel and the sprocket-wheel on the sleeve, a pawl-arm loosely mountedon the front fork, a spring pressed pawl for engaging the ratchet-teethof the bevel-gear, and a link connecting the pawl-arm with the movablesection of the handle-bar.

2. The combination with the bicycle and the driving mechanism therefor,of an auxiliary driving mechanism comprising a bevelgear looselyjournaled on the front fork, and provided on its periphery withratchet-teeth, a horizontal shaft arranged above the bevel gear-wheeland provided with a bevel-gear meshing therewith, a sprocket-Wheel rigidwith said last-named bevel-gear, a sprocketwheel on the rear wheel ofthe bicycle, a sprocket-chain connecting said sprocketwheels, ahandle-bar comprising a plurality of pivotally-connected sections, aawl-arm having a pawl for engaging the rate et-teeth of the bevelgear-wheel, and a connection between the movable section of thehandle-bar and the pawl-arm.

3. The combination of the bicycle having a handle-bar provided with amovable section, of a bevel-gear loosely j ournaled on the front fork,and provided on its peripheral surface with ratchet-teeth, a pawl-arrnhaving a pawl for engaging the-ratchet-teeth, a link connecting themovable section of the handle-bar and the pawl-arm, and a connectionbetween the bevel-gear and a wheel of the bicycle, for transmittingmotion thereto.

4. The combination of the bicycle having a handle-bar provided with amovable section, driving mechanism for the bicycle, means connected withthe movable section of the handle-bar for actuating the drivingmechanism, and means for normally retaining the sections of thehandle-bar in alinement.

HILDEBRANDO GARZA. l/Vitnesses:

J. MIo GAENIDO, F. J. GUERRA.

